The VCR Illumination - Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon's past inspires him not to give up. Also, Bernadette turns into a pageant mom when she tries to help Wolowitz ace his Magic Castle audition, on THE BIG BANG THEORY, Thursday, Dec. 6 (8:00-8:31 PM, ET/PT) on the CBS Television Network.

This will be the last original episode of 2018 as the show takes a break over the Christmas and New Year holidays. The Big Bang Theory's twelfth and final season will continue in January 2019 as we head towards the series finale.

More about the episode

With Sheldon and Amy down in the dumps after their theory was disproved, Leonard retrieves an old VHS recording to cheer him up. Meanwhile, an old video of Howard as an aspiring magician leads Bernadette to act as his pageant mom and coach him for his Magic Castle audition.